CN107084762B - A kind of suspended body flowmeter that more gases are general - Google Patents
A kind of suspended body flowmeter that more gases are general Download PDFInfo
- Publication number
- CN107084762B CN107084762B CN201710348737.6A CN201710348737A CN107084762B CN 107084762 B CN107084762 B CN 107084762B CN 201710348737 A CN201710348737 A CN 201710348737A CN 107084762 B CN107084762 B CN 107084762B
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- Prior art keywords
- float
- hollow pipe
- mounting disc
- suspended body
- gases
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
- G01F1/52—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring the height of the fluid level due to the lifting power of the fluid flow
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/06—Indicating or recording devices
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
The present invention relates to a kind of suspended body flowmeters that more gases are general, including float, hollow pipe and float mounting disc；The float is located in hollow pipe, and the float is multiple, and multiple floats are made of the different material of density；The multiple float is mounted in float mounting disc；The hollow pipe is located at the top of the float mounting disc, and hollow pipe and float mounting disc opposite can be slided in horizontal plane.The suspended body flowmeter makes the suspended body flowmeter have versatility, is applicable to the flow measurement of multiple gases by the density of change float.
Description
Technical field
The present invention relates to a kind of flowmeters, and in particular to a kind of suspended body flowmeter that more gases are general.
Background technique
Many production processes need the participation of gas, in laboratory simulation production and plant produced practice, to gas
The control of the flow of body is very important link.During laboratory simulation, usually using the method for control variable to not
Influence of the congener gas to production process is studied, and due to the measurement limitation of existing suspended body flowmeter, it needs
Corresponding scale conversion is carried out when gas and changing, it is relatively time consuming and error-prone.
Referring to Fig. 1, existing suspended body flowmeter mainly includes float and hollow pipe, and float is arranged among conical pipe, referring to
Fig. 1, its working principles are as follows:
If the flow velocity v between float and conical pipe at circular passage:
ρ1Av2/ 2=V (ρ-ρ1)g
In formula,
A: the maximum secting area of float, m2；
V: the volume of float, m3；
ρ1: the density of float, kg/m3；
ρ: the density of detected fluid, kg/m3；
V: the flow velocity between float and conical pipe at circular passage, m/s.
Summary of the invention
In view of the above-mentioned problems existing in the prior art, the object of the present invention is to provide the float streams that one kind of multiple gases use
Meter.
To achieve the above object, the present invention adopts the following technical scheme: a kind of suspended body flowmeter that more gases are general, including
Float and hollow pipe, the float are located in hollow pipe, it is characterised in that: further include float mounting disc；
The float is multiple, and multiple floats are made of the different material of density；
The multiple float is mounted in float mounting disc；
The hollow pipe is located at the top of the float mounting disc, and hollow pipe and float mounting disc horizontal plane can be opposite
Sliding.
As optimization, the hollow pipe from the material of trapezium structure by two bevel edges respectively to the center coil of wire of trapezium structure
It is formed, and one, two bevel edges of trapezium structure is located in hollow pipe, one is located at outside hollow pipe.
As optimization, the outer wall of the hollow pipe is equipped with rotary switch, and the rotary switch is by adjusting described two tiltedly
Distance between side adjusts the angle of hollow pipe and vertical plane.
Compared with the existing technology, the present invention has the advantage that
The present invention converts the difference of different gas flow to the taper of suspended body flowmeter or the change of float density, solution
The problem of existing suspended body flowmeter of having determined can only measure pure gas under scale of dispatching from the factory realizes gas with various in same flowmeter
Factory scale under measurement.
Compared with conventional flow meters, measured deviation is less than the suspended body flowmeter designed by change hollow pipe taper
1%, within the scope of the allowable error that flowmeter uses.By the suspended body flowmeter and conventional flow that change the design of float density
Meter is without measured deviation.
Detailed description of the invention
Fig. 1 is the measuring principle of existing suspended body flowmeter.
Fig. 2 is suspended body flowmeter described in embodiment 1.
Fig. 3 is suspended body flowmeter as described in example 2.
In figure: 1- float, the mounting disc of 2- float, 3- hollow pipe, 4- rotary switch
Specific embodiment
Invention is further described in detail below.
In the description of the present invention, it is to be understood that, the orientation or position of the instructions such as term "top", "bottom" "inner", "outside"
Setting relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description of the present invention and simplification of the description, rather than
The device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot
It is interpreted as limitation of the present invention.
Embodiment 1: the general suspended body flowmeter of more gases, including float and hollow pipe, the float are located in hollow pipe,
It further include float mounting disc；
The float is multiple, and multiple floats are made of the different material of density；
The multiple float is mounted in float mounting disc；
The hollow pipe is located at the top of the float mounting disc, and hollow pipe and float mounting disc horizontal plane can be opposite
Sliding.
By changing the float in flowmeter, the versatility of flowmeter is realized, to solve float stream in the prior art
Meter can only be directed to a kind of defect that gas measures.
Changing the method for float in hollow pipe, preparation different densities, the identical float of shape are placed in disc device,
When converting tested gas, the corresponding device for holding float is connected with hollow pipe by rotation float mounting disc, to complete
Flow measurement to gas with various.
If float is stablized, the volume flow that fluid passes through is Q:
In formula, α: discharge coefficient；
A0: the circular passage area of locating hollow pipe, m when float settling position2。
In formula,
R: the radius of the hollow pipe at float settling position, m；
R: the radius of float, m；
The inclination angle of hollow pipe, the i.e. angle of the tube wall of hollow pipe and vertical plane.
Change float inside suspended body flowmeter and carries out the suspended body flowmeters of more gas flow measurements
It can be obtained according to formula (2)
In formula,
ρa,ρbIt indicates when measurement gas with various, when float is in hollow pipe sustained height, two kinds of floats of corresponding selection
Density.
It is calculated by the further derivation to suspended body flowmeter principle, flow-rate ratio when two kinds of gases to be passed through to hollow pipe turns
It is changed to the density ratio of float, i.e., according to the different corresponding change floats of gas are tested to carry out the stream of more gases under same scale
Measurement.
It is pushed over by above-mentioned formula as it can be seen that making in the case where flowmeter other parameters are constant when different gas flows through
Float when be in same position, the actual flow of gas than can approximate transform for conical pipe inclination angle ratio.
Embodiment 2: the general suspended body flowmeter of more gases, including float and hollow pipe, the float are located in hollow pipe,
Hollow pipe from the material of trapezium structure by two bevel edges respectively to the center winding type of trapezium structure at and two of trapezium structure
One, bevel edge is located in hollow pipe, and one is located at outside hollow pipe.
As optimization, the outer wall of the hollow pipe is equipped with rotary switch, and the rotary switch is by adjusting described two tiltedly
Distance between side adjusts the angle of hollow pipe and vertical plane.
The flow-rate ratio of gas with various is converted to the inclination angle ratio of hollow pipe:
According to formula (2) and formula (3), for a, two kinds of gases of b, A0a/A0b=K-1；
Again?
Approximate
It is further approximate to obtain
Gas with various passes through the flow-rate ratio of float-type timing:
In formula,
Qa,Qb: for the flow of gas with various, m3/s；
ρa,ρb: the density of gas with various, kg/m3。
Since the density of float is much larger than the density of gas, the density of gas is had ignored with approximate method.NoteThe density revision coefficient for indicating gas, is usually chosen to be air for b gas, thus in traditional float-type
The conversion of scale is carried out in meter.
The method for changing suspended body flowmeter inclination angle selects flexible material to manufacture hollow tube wall, to different gas
It when body carries out flow measurement, is controlled by shape of the rotation apparatus to hollow pipe, that is, changes the inclination angle of hollow pipe, thus complete
At the flow measurement of gas with various.
It is calculated by the further derivation to suspended body flowmeter principle and part is approximate, two kinds of gases are passed through into hollow pipe
When flow-rate ratio be converted to the angle ratio of hollow pipe, i.e., the angle of change hollow pipe is to carry out the stream of more gases under same scale
Measurement.
It is pushed over by above-mentioned formula visible: when different gas flows through so that float is in same position, in flowmeter
In the case that other parameters are constant, density ratio of the actual flow of gas than can be exchanged into float material.
Embodiment 3: a kind of suspended body flowmeter that more gases are general, including float and hollow pipe, the float are located at hollow
It further include float mounting disc in pipe；
The float is multiple, and multiple floats are made of the different material of density；
The multiple float is mounted in float mounting disc；
The hollow pipe is located at the top of the float mounting disc, and hollow pipe and float mounting disc horizontal plane can be opposite
Sliding；
The hollow pipe from the material of trapezium structure by two bevel edges respectively to the center winding type of trapezium structure at, and ladder
One, two bevel edges of shape structure is located in hollow pipe, and one is located at outside hollow pipe.
The suspended body flowmeter is the density for changing float, and changes the angle of hollow pipe and vertical plane, to realize that this is floating
Versatility of the subflow meter to multiple gases.
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to compared with
Good embodiment describes the invention in detail, those skilled in the art should understand that, it can be to skill of the invention
Art scheme is modified or replaced equivalently, and without departing from the objective and range of technical solution of the present invention, should all be covered at this
In the scope of the claims of invention.
Claims (1)
1. a kind of suspended body flowmeter that more gases are general, including float and hollow pipe, the float are located in hollow pipe, special
Sign is: further including float mounting disc；
The float is multiple, and multiple floats are made of the different material of density；
The multiple float is mounted in float mounting disc；
The hollow pipe is located at the top of the float mounting disc, and hollow pipe can be slided with float mounting disc in horizontal plane relatively
It is dynamic；
The hollow pipe from the material of trapezium structure by two bevel edges respectively to the center winding type of trapezium structure at and trapezoidal knot
One, two bevel edges of structure is located in hollow pipe, and one is located at outside hollow pipe；
The outer wall of the hollow pipe is equipped with rotary switch, which is adjusted by the distance between adjusting two bevel edges
Save the angle of hollow pipe and vertical plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710348737.6A CN107084762B (en) | 2017-05-17 | 2017-05-17 | A kind of suspended body flowmeter that more gases are general |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710348737.6A CN107084762B (en) | 2017-05-17 | 2017-05-17 | A kind of suspended body flowmeter that more gases are general |
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| Publication Number | Publication Date |
|---|---|
| CN107084762A CN107084762A (en) | 2017-08-22 |
| CN107084762B true CN107084762B (en) | 2019-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710348737.6A Expired - Fee Related CN107084762B (en) | 2017-05-17 | 2017-05-17 | A kind of suspended body flowmeter that more gases are general |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108871466B (en) * | 2018-06-08 | 2021-03-09 | 安徽中知众创知识产权运营有限公司 | Three-rotor flow meter with various connecting mechanisms |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5193400A (en) * | 1991-05-10 | 1993-03-16 | Lew Hyok S | Universal rotameter |
| CN202403746U (en) * | 2011-12-20 | 2012-08-29 | 西安东风机电有限公司 | Conversion type wide-range mass flowmeter sensor |
| CN102706398A (en) * | 2012-05-25 | 2012-10-03 | 南京钟腾化工有限公司 | Rotameter |
| CN102853868A (en) * | 2012-08-17 | 2013-01-02 | 西安建筑科技大学 | Two-way multifunctional rotor flow meter |
| CN205748505U (en) * | 2016-07-12 | 2016-11-30 | 四川农业大学 | A kind of suspended body flowmeter |
-
2017
- 2017-05-17 CN CN201710348737.6A patent/CN107084762B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5193400A (en) * | 1991-05-10 | 1993-03-16 | Lew Hyok S | Universal rotameter |
| CN202403746U (en) * | 2011-12-20 | 2012-08-29 | 西安东风机电有限公司 | Conversion type wide-range mass flowmeter sensor |
| CN102706398A (en) * | 2012-05-25 | 2012-10-03 | 南京钟腾化工有限公司 | Rotameter |
| CN102853868A (en) * | 2012-08-17 | 2013-01-02 | 西安建筑科技大学 | Two-way multifunctional rotor flow meter |
| CN205748505U (en) * | 2016-07-12 | 2016-11-30 | 四川农业大学 | A kind of suspended body flowmeter |
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| CN107084762A (en) | 2017-08-22 |
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Granted publication date: 20190402 Termination date: 20210517 |